import {
   mapGetters
 } from 'vuex'
 export default {
   computed: {
     ...mapGetters('m_cart', ['total'])
   },
   onShow() {
     this.setBadge()
   },
   methods: {
     setBadge() {
       uni.setTabBarBadge({
         index: 2,
         text: this.total + ''
       })
     }

   },
   watch:{
     total(newval){
       this.setBadge()
     },
     immediate:true
   }
 }
